In the figure,a very large plane sheet of positive charge is shown. $P_{1}$ and $P_{2}$ are two points at distances $l$ and $2l$ from the charge distribution. If $\sigma$ is the surface charge density,then the magnitude of electric fields $E_{1}$ and $E_{2}$ at $P_{1}$ and $P_{2}$ respectively are:

• A
  $E_{1} = \sigma / \varepsilon_{0}, E_{2} = \sigma / 2\varepsilon_{0}$
• B
  $E_{1} = 2\sigma / \varepsilon_{0}, E_{2} = \sigma / \varepsilon_{0}$
• C
  $E_{1} = E_{2} = \sigma / 2\varepsilon_{0}$
• D
  $E_{1} = E_{2} = \sigma / \varepsilon_{0}$